GENERAL DESCRIPTION
The SMSC FDC37C665GT and FDC37C666GT
Advanced High Performance Multi-Mode
Parallel Port Super I/O Floppy Disk Controller
ICs utilize SMSC's proven SuperCell technology
for increased product reliability and functionality.
The
FDC37C665GT
is
optimized
for
motherboard
applications
while
the
FDC37C666GT is oriented towards controller
card applications. Both devices support 1 Mb/s
data rates for vertical recording operation. The
FDC37C665GT is hardware compatible with the
FDC37C651 and FDC37C661 in the Standard
and Enhanced Parallel Port Modes.
The FDC37C665GT and FDC37C666GT
incorporate SMSC's true CMOS 765B floppy
disk controller, advanced digital data separator,
16 byte data FIFO, two 16C550 compatible
UARTs, one Multi-Mode parallel port which
includes ChiProtect circuitry plus EPP and ECP
support, IDE interface, on-chip 24 mA AT bus
drivers, game port chip select (FDC37C666GT
only), general purpose address decoder and
four floppy direct drive support. The true CMOS
765B core provides 100% compatibility with IBM
PC/XT and PC/AT architectures in addition to
providing data overflow and underflow
protection. The SMSC advanced digital data
separator incorporates SMSC's patented data
separator technology, allowing for ease of
testing and use. Both on-chip UARTs are
compatible with the NS16C550. The parallel
port,
the
IDE interface and the
game port select logic are compatible with IBM
PC/XT and PC/AT architectures, as well as EPP
and
ECP.
The
FDC37C665GT
and
FDC37C666GT incorporate sophisticated power
control circuitry (PCC). The PCC supports
multiple low power down modes.
The FDC37C665GT Floppy Disk Controller
incorporates Software Configurable Logic (SCL)
for ease of use. Use of the SCL feature allows
programmable system configuration of key
functions such as the FDC, parallel port, and
UARTs. The parallel port ChiProtect prevents
damage caused by the printer being powered
when the FDC37C665GT or FDC37C666GT is
not powered. The parallel port backdrive current
protection prevents the FDC37C665GT or
FDC37C666GT from sinking current when the
device is powered off and the printer is left
powered on.
The FDC37C665GT and FDC37C666GT do not
require any external filter components and are,
therefore, easy to use and offer lower system
cost
and
reduced
board
area.
The
FDC37C665GT
and
FDC37C666GT
are
software and register compatible to the
82077AA using SMSC's proprietary floppy disk
controller core.
IBM, PC/XT and PC/AT are registered trademarks and PS/2 is
a trademark of International Business Machines Corporation.
SMSC is a registered trademark and ChiProtect, SuperCell,
and Multi-Mode are trademarks of Standard Microsystems
Corporation
3
SMSC [ SMSC CORPORATION ]
